LED 4, leakage current is a one-way electric light, if there is a reverse current, it is called leakage, leakage current of LED, short life, low prices.

5, LED beam angle of beam angle for different purposes are different. Special angle, the higher the price. Such as the scattering angle, the higher the price.

6, life quality is the key to life, life determined by the light failure. Lumen maintenance, long life, long life, high price.

LED light for 7, wafer chips, different chips, prices vary widely. Chips is more expensive in Japan, America, Taiwan and domestic chip prices generally lower than that of Japan, the United States (CREE).

8, chip wafer size is expressed in length, chip LED the quality is better than a small chip. Price is proportional to the chip.